Retail traders piled back into stocks after last week's tech rout. Here's what JPMorgan said they bought.

The Wall Street bull stands in the financial district near the New York Stock Exchange

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• Retail traders bought the dip in beaten-down software names after last week's plunge.
• They also piled back into Magnificent Seven stocks after earnings-induced declines.
• JPMorgan flagged what the retail cohort bought in the week after the software sector's historic drop.

Dip-buyers in the retail crowd rushed back into stocks and ETFs after last week's big software-led plunge...